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Method for the preparation of quaternary carboxamide polymers - Patent 4390659 (4031 words) |
 | Quaternary carboxamide polymers such as N-(triethylammonium ethyl)acrylamide chloride are prepared by simultaneously contacting a carboxamide polymer with an aldehyde such as formaldehyde, a secondary amine such as dimethylamine and a quaternizing agent such as methyl chloride. |
| The quaternary carboxamide polymers prepared by the method of this invention are usefully employed in a wide variety of applications such as the flocculation of dispersed particulate solids from an aqueous suspension, including sewage and effluent from industrial mining and paper manufacturing operations. |
| By the term "substantial reaction of the carboxamide polymer" it is meant that less than about 50 mole percent of the reactive carboxamide groups pendant from the polymer is reacted with the aldehyde, amine or the adduct thereof prior to the contact of the polymer with a measurable amount of the quaternizing agent. |
| Carboxamide - Wikipedia, the free encyclopedia (74 words) |
| Carboxamides are drugs that can be used as anticonvulsants. |
| In organic chemistry carboxamides (or amino carbonyls) are functional groups with the general structure R-CO-NH with R as an organic substituent. |
| Two amino acids, asparagine and glutamine, have a carboxamide group in them. |
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